Serrations grip the material surface instead of the threads for
easy installation and mild vibration resistance. The flange
distributes pressure where the nut meets the material surface,
eliminating the need for a separate washer. Comparable in strength
to Class 8.8 bolts, they're suitable for fastening most machinery
and equipment. Height includes the flange.

We are professional manufacture factory of screws, bolts, rivets,
nuts,bushing and non-standard fastener from China.

Suzhou Runtai Prcision Hardware Co,.Ltd was eastiblished in 2000,
located in the Suzhou City. With more than 10 years export
experience, our products has been best-selling in Europe, the
United States, the Southeast Asia.

We can supply the fastener according to GB, DIN, JIS, ANSI, BS, ISO
and other standards, we can also supply fastener according to
customer request.With favorable prices,in-time delivery and perfect after-sales
service, my company have build longterm business relationship with
more than 20 country customers.

Widely praised by my customer.

Quality is the eternal pursuit of my company. In 2011, my company
pass the third part quality system certification ISO9001-2008.
After one year of successfully delvoping, we passed another third
part quality system certification ISO / TS16949.

With advanced production equipment, Modernization detection,
testing equipment and instruments, scientific and effective
management methods, to provide best quality products and services
to customer.